How to Create New Folders in OS X El Capitan
So you think that Apple has already given you enough folders? Can’t imagine why you’d need more folders in OS X El Capitan? Think of creating new folders the same way you’d think of labeling a new folder at work for a specific project. New folders help you keep your files organized, enabling you to reorganize them just the way you want. Creating folders is really quite simple.
To create a new folder, just follow these steps:
Decide which window you want the new folder to appear in — and then make sure that window is active.
If you want to create a new folder right on the Desktop, make sure that no window is active or that you’re working in your Home/Desktop folder window. You can make a window active by clicking it, and you can make the Desktop active if you have windows onscreen by clicking the Desktop itself.
Choose File→New Folder (or press Shift+Command+N).
A new, untitled folder appears in the active window with its name box already highlighted, ready for you to type a new name for it.
Type a name for your folder.
If you accidentally click anywhere before you type a name for the folder, the name box is no longer highlighted. To highlight it again, select the icon (single-click it) and press Return once. Now you can type its new name.
Give your folders relevant names. Folders with nebulous titles like sfdghb or Stuff or Untitled won’t make it any easier to find something six months from now.
For folders and files that you might share with users of non-Macintosh computers, here’s the rule for maximum compatibility: Use no punctuation and no Option-key characters in the folder name. Periods, slashes, backslashes, and colons in particular can be reserved for use by other operating systems.